English verb conjugation
COULD PREPURCHASE

Regular verb: prepurchase - prepurchased - prepurchased

Affirmation

Simple form	V-ing form
I could prepurchase you could prepurchase he could prepurchase we could prepurchase you could prepurchase they could prepurchase	I could be prepurchasing you could be prepurchasing he could be prepurchasing we could be prepurchasing you could be prepurchasing they could be prepurchasing
Perfect	V-ing perfect
I could have prepurchased you could have prepurchased he could have prepurchased we could have prepurchased you could have prepurchased they could have prepurchased	I could have been prepurchasing you could have been prepurchasing he could have been prepurchasing we could have been prepurchasing you could have been prepurchasing they could have been prepurchasing

Negation

Simple form	V-ing form
I could not prepurchase you could not prepurchase he could not prepurchase we could not prepurchase you could not prepurchase they could not prepurchase	I could not be prepurchasing you could not be prepurchasing he could not be prepurchasing we could not be prepurchasing you could not be prepurchasing they could not be prepurchasing
Perfect	V-ing perfect
I could not have prepurchased you could not have prepurchased he could not have prepurchased we could not have prepurchased you could not have prepurchased they could not have prepurchased	I could not have been prepurchasing you could not have been prepurchasing he could not have been prepurchasing we could not have been prepurchasing you could not have been prepurchasing they could not have been prepurchasing

Interrogative form

Simple form	V-ing form
could I prepurchase? could you prepurchase? could he prepurchase? could we prepurchase? could you prepurchase? could they prepurchase?	could I be prepurchasing? could you be prepurchasing? could he be prepurchasing? could we be prepurchasing? could you be prepurchasing? could they be prepurchasing?
Perfect	V-ing perfect
could I have prepurchased? could you have prepurchased? could he have prepurchased? could we have prepurchased? could you have prepurchased? could they have prepurchased?	could I have been prepurchasing? could you have been prepurchasing? could he have been prepurchasing? could we have been prepurchasing? could you have been prepurchasing? could they have been prepurchasing?

Interro-negative form

Simple form	V-ing form
could I not prepurchase? could you not prepurchase? could he not prepurchase? could we not prepurchase? could you not prepurchase? could they not prepurchase?	could I not be prepurchasing? could you not be prepurchasing? could he not be prepurchasing? could we not be prepurchasing? could you not be prepurchasing? could they not be prepurchasing?
Perfect	V-ing perfect
could I not have prepurchased? could you not have prepurchased? could he not have prepurchased? could we not have prepurchased? could you not have prepurchased? could they not have prepurchased?	could I not have been prepurchasing? could you not have been prepurchasing? could he not have been prepurchasing? could we not have been prepurchasing? could you not have been prepurchasing? could they not have been prepurchasing?